Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Acta Amazonica (2) Autor SOUZA JÚNIOR,Valdomiro Severino de (2) ARAÚJO FILHO,José Coelho de (1) BARROS,Gerson Moreira (1) CÂMARA,Elis Regina Guimarães (1) DELARMELINDA,Elaine Almeida (1) MATOSO,Stella Cristiani Gonçalves (1) PÉREZ,Xosé Lois Otero (1) SANTOS,Jean Cheyson Barros dos (1) WADT,Paulo Guilherme Salvador (1) Mais... Palavra-chave Amazonian soils (1) Biochar quality (1) Chemical attributes (1) Coffee husk (1) Multivariate analysis (1) Physical attributes (1) Pyrolysis (1) Rice husk (1) Soil mineralogy (1) Triple superphosphate (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2019 (1) 2018 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Association between parent materials and soil attributes along different geological environments in western Pará, Brazil Acta Amazonica BARROS,Gerson Moreira; SANTOS,Jean Cheyson Barros dos; SOUZA JÚNIOR,Valdomiro Severino de; DELARMELINDA,Elaine Almeida; ARAÚJO FILHO,José Coelho de; CÂMARA,Elis Regina Guimarães. ABSTRACT The expansion of the agricultural frontier into different geological environments in the west of the state of Pará, northern Brazil, makes it necessary to know the influence of the parent material on local soil attributes. This study aimed to evaluate the influence of different parent materials on five soil profiles along a lithosequence exposed by the BR-163 highway, which runs from north to south through western Pará. The soils were classified, morphologically described and their main horizons sampled for physical, mineralogical and chemical analyses, including the determination of micronutrients, forms of phosphorus and secondary forms of iron. Multivariate analysis was used to group the different soil-parent material associations. The results... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil mineralogy; Physical attributes; Chemical attributes; Multivariate analysis. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000300261 Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils Acta Amazonica MATOSO,Stella Cristiani Gonçalves; WADT,Paulo Guilherme Salvador; SOUZA JÚNIOR,Valdomiro Severino de; PÉREZ,Xosé Lois Otero. ABSTRACT Phosphorus (P) is one of the nutrients that most limits agricultural productivity, especially in tropical soils. Enriched biochar has been proposed to increase the bioavailability of P and other nutrients in the soil. Thus, the objective of this study was to evaluate the availability of P in phosphate biochar (composed of biomass and soil) as a function of the triple superphosphate mixture before and after the pyrolysis process. We produced eight types of enriched biochar via pyrolysis by combining sandy or clayey soil with rice or coffee husk, and by adding triple superphosphate before or after pyrolysis. The heating of the phosphate fertilizer during the pyrolysis process resulted in a higher crystallinity of the phosphates, lower content of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian soils; Coffee husk; Rice husk; Pyrolysis; Triple superphosphate; Biochar quality. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000400268 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco